Silicon Carbide Refractory Block from Japan
Silicon carbide refractory blocks are fired ceramic blocks made from silicon carbide grains, used in high-wear areas of incinerators and boiler linings. They provide exceptional abrasion resistance and thermal conductivity. Classified in HTS 6902.90.50 for other refractory ceramic constructional goods.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide firing certificates showing temperatures >800°C to confirm Chapter 69 applicability
• Include SiC content certification; avoid declaring as 'articles of chapter 82' if shaped for construction